Valve-spring compressor



July 15 1924.

1,501,143 F. c. STAKE ET AL VALVE SPRING COMPRESSOR Filed June 15. 1923 Patented July 15, 1924..

UNiiEB STATES @FEFEQE.

FRED C. STAKE, HOLLIE B. KINYOUN, AND

JOHN P. BEYNGLDS, OF GRGQK, COLORADQ.

VALVE-SPRING COMPRESSGR.

Application filed June 15,

To all whom 2'23 may concern:

Be it known that FRED C. STAKE, HoLLIn B. KINYOL'N, and JOHN P. RnYNoLos. citizens of the United States, residing at Crook, in the county of Logan and State of Colorado, have invented certain new and useful Improvements in Valve-Spring Compressors, of which the following is a specification,

reference being had therein to the accom- I pin below spring and in the valve stem may be easily removed, or replaced.

A further object is to provide a valve spring compressor comprising a U-shaped member adapted to hook over the manifold of an internal combustion engine with one of its arms vertically disposed. A lever disposed below. the vertically disposed arm and suspended from an angularly shaped member threaded on the vertically disposed arm and provided with a bifurcation for receiving the lower end of a valve stem below the valve spring, the angularly shaped member by being threaded allowing adjustment of the lever vertically for different types of engines.

With the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawing, described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawing Figure 1 is a vertical sectional view through a conventional form of internal combustion engine, showing the valve stem compressor applied thereto.

' Figure 2 is a perspective view of the valve stem compressor.

Referring to the drawing, the numeral 1 designates a conventional form of internal combustion engine and 2 the manifold thereof. Disposed within the manifold 2 is a valve 8 which is carried by a vertically slid able valve stem 4. The lower end of the 1923'. Serial No 645,622.

valve stem 4 is provided with a pin 5 and a washer 6, and interposed between the washer 6 and the manifold 2 is a coiled spring 7. It has been found extremely difficult, When it is desired to remove the valve and valve stem, to remove the pin 5, which operation necessitates the compression of the valve stem 3., and the holding of the valve spring while the pin is removed with a tool, such for instance as a'pair of pliers.

To obviate this difiicult-y a valve spring compressor is provided, which comprises a U-shaped member 8, the arm 9 of which is adapted to hook over the manifold 2, and if so desired extend downwardly into the manifold into engagement with the valve 3 for holding said valve against movement during the spring compressing operation and consequently the valve stem 4: against movement. The arm 10 of the U-shaped member 8 is disposed outside of the manifold 1, o

and is vertically disposed. Arm 10 is provided with thread 11 for a substantial distance, and threaded on said arm is a substantially right angularly shapedbracket 12,

the arm 13 of which is. threaded on the arm 10 of the U-shaped member, and the arm 14 substantially vertically disposed. The

-thread 11 extends on the arm 10 a distance greater than the length of the arm 14:, consequently the wide range of adjustability is provided for the bracket 12, thereby allowing thedevice to be applied to various types of engines and the arm 9 to be placed in various positions on the manifold, orin engagement with the valve 3, as shown. Disposed below the bracket 12 is a substantially horizontally disposed member 15, the inner end of which is provided with spaced arms 16, thereby forming a bifurcation 17 for the reception of the lower end of the valve stem 1, and struck up f'rom'the inner end of the bifurcation 17 is a lug 18, which engages the washers '6 and limits the inward movement of the member 15 to a position where the bifurcation will not interfere with the pin 5 passing therethrough during a compression operation. The outer end of the member 15 is provided with a handle member 19 adapted to be grasped by an operator and forced downwardly for compressing the spring.

Intermediate the end of the member 15 are spaced apertures 20, in any of which apertures the hook 21 may be placed for receiving the lower end of the arm 14 of the bracket 12 by passing through an eye 22 therein, thereby forming a fulcruming point for the member 15 during a spring com pressing operation, By providing a plurality of apertures 20, it is obvious that the member 15 may be adjusted for properly positioning the fulcrum point thereof in relation to the arm 10 of the U-shaped mem her and the bearing point of the arm 9. For instance if the arm 9 were placed in some other position, other than that shown on the manifold or engine casing, and out of axial alignment with the valve stem 4. After the spring 7 is compressed, the operator may easily remove the pin 5 from the stem 4. or replace the same. It has been found that the device is capable of being applied to all types of internal combustion engines, and that the spring can be com pressed and the spring removed or replaced in a minimum amount of time.

The invention having been set forth what is claimed as new and useful is 1. A valve spring compressor for internal combustion engines, said compressor comprising a U-shaped member having substantially parallel arms, one of said arms being adapted to hook over a portion of the engine, the other arm being threaded and adapted to extend downwardly to the side of the engine, a bracket threaded on said threaded shaft, a lever pivotally connected to said bracket intermediate the ends of the lever, and a bifurcation carried by one end of said lever and adapted to receive the lower end of a valve stem beneath a valve spring.

2. The combination with an internal oombustion engine, a valve stem mounted in said engine, a coiled spring surrounding said valve stem, a pin carried by the end of said valve stem, of a valve stem compressor, said compressor comprising a slidably hooked member having a short arm and long arm, said short arm being adapted to engage a portion of said engine, said long arm being threaded a substantial distance, an angularly shaped bracket having one of its arms threaded on the threaded arm, said angularly shaped bracket having its other arm extending substantially parallel to the valve stem, and provided with an aperture in its end, a lever having a plurality of apertures intermediate its ends, a hooked mem ber detachably connected in one of said apertures and extending through the aperture of the arm of the angularly shaped member, one end of said lever being provided with spaced arms thereby forming a recess for the reception of the lower end of the valve stem and a lug carried by the inner end of the recess and forming means for limiting the movement of the valve stem into the recess.

3. The combination with a valve stem spring compressor comprising a U-shaped member, a spring compressing lever, of a connection between said lever and U-shaped member whereby a maximum range of adjustability may be obtained, said connection comp-rising an angularly shaped member, one of the arms of the angularly shaped member being threaded on one of the arms of the U-shaped member and movable thereon a distance greater than the length of the angularly shapedmember, the other arm of said angularly shaped member being connected 1 to a longitudinally adjustable hooked member carried by the lever.

In testimony whereof we hereunto afiix our signatures.

FRED O. STAKE. HOLLIE B. KINYOUN. JOHN P. REYNOLDS. 

